McClintock was experimenting with maize plants that had broken chromosomes. In the winter of 1944–1945, McClintock planted corn kernels that were self-pollinated, meaning that the silk (style) of the flower received pollen from its own anther.
Also as mentioned before, the presence of TEs closed by the TSS locations is correlated to their evolutionary age (number of different mutations that TEs can develop during the time). == Examples == The first TEs were discovered in maize (Zea mays) by Barbara McClintock in 1948, for which she was later awarded a Nobel Prize.
She presented her report on her findings in 1951, and published an article on her discoveries in Genetics in November 1953 entitled "Induction of Instability at Selected Loci in Maize". At the 1951 Cold Spring Harbor Symposium where she first publicized her findings, her talk was met with dead silence.
She presented her report on her findings in 1951, and published an article on her discoveries in Genetics in November 1953 entitled "Induction of Instability at Selected Loci in Maize". At the 1951 Cold Spring Harbor Symposium where she first publicized her findings, her talk was met with dead silence.
Her work was largely dismissed and ignored until the late 1960s–1970s when, after TEs were found in bacteria, it was rediscovered.
Barbara McClintock's discovery of them earned her a Nobel Prize in 1983. Transposable elements make up a large fraction of the genome and are responsible for much of the mass of DNA in a eukaryotic cell.
She was awarded a Nobel Prize in Physiology or Medicine in 1983 for her discovery of TEs, more than thirty years after her initial research. Approximately 90% of the maize genome is made up of TEs, as is 44% of the human genome. == Classification == Transposable elements represent one of several types of mobile genetic elements.
Baker (Plant Transposable Elements, pp 161–174, 1988, Plenum Publishing Corp., ed.
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